Remote code execution in Microsoft .NET Framework, SharePoint Server, and Visual Studio
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-1147 |
| CWE-ID | CWE-91 |
| Exploitation vector | Network |
| Public exploit | Vulnerability #1 is being exploited in the wild. |
| Vulnerable software |
Microsoft SharePoint Server Server applications / Application servers Visual Studio Universal components / Libraries / Software for developers ASP.NET Core MVC Universal components / Libraries / Software for developers Microsoft .NET Core Server applications / Frameworks for developing and running applications Microsoft .NET Framework Server applications / Frameworks for developing and running applications |
| Vendor | Microsoft |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) XML injection
EUVDB-ID: #VU29836
Risk: High
CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber]
CVE-ID: CVE-2020-1147
CWE-ID:
CWE-91 - XML Injection
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper input validation when processing XML data in .NET Framework, Microsoft SharePoint, and Visual Studio. A remote unauthenticated attacker can pass specially crafted XML data to the application and execute arbitrary code on the system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsMicrosoft SharePoint Server: 2010 - 2019
Visual Studio: 15.9 - 16.6.0 16.6.30114.105
ASP.NET Core MVC: 2.1.0
Microsoft .NET Core: 3.1
Microsoft .NET Framework: 2.0 - 4.8
CPE2.3- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2010:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2013:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_sharepoint_server:2016:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio:15.9:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio:16.0.0:16.0.28729.10:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio:16.4.0:16.4.29519.181:*:*:*:*:*:*
- cpe:2.3:a:microsoft:visual_studio:16.6.0:16.6.30114.105:*:*:*:*:*:*
- cpe:2.3:a:microsoft:aspnet_core_mvc:2.1.0:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_.net_core:3.1:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:microsoft_net_framework:2.0:*:*:*:*:*:*:*
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
Yes. This vulnerability is being exploited in the wild.
